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Nyköping Castle

Plizio editorial teamUpdated: Jun 2026Data Sources

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Nyköping Castle, historically known as Nyköpingshus, is a significant medieval fortress with roots extending back to the late 12th century. Originally established as a defensive tower to guard the mouth of the Nyköping River, it was expanded under Birger Jarl in the 13th century into one of Sweden's most formidable strongholds. The castle is most famous for the Nyköping Banquet in 1317, a pivotal historical event where King Birger imprisoned his brothers, Dukes Erik and Valdemar, leading to their eventual death in the dungeons. During the 16th century, Duke Karl, who later became King Karl IX, transformed the fortress into a grand Renaissance palace featuring elaborate towers and architectural flourishes. A catastrophic fire in 1665 destroyed much of the complex, and it was never fully restored to its former glory. Today, the partially reconstructed site serves as the home of the Sörmland Museum, preserving the legacy of Swedish power struggles and architectural evolution over the centuries.

Location: Sweden
Top sights: Kulturhuset Slottsvakten · Nyköpingshus · Borggården
Nearby: Danvikshagen (8 km)

Best time to visit & climate

The most pleasant time to visit is Jun–Aug.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	-3	-3	0	6	11	15	19	17	13	7	3	-1
Rain mm	49	42	40	40	59	80	86	79	57	69	63	56

📋 Practical info

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Visiting

The ruins of Nyköping Castle are accessible year-round, while the indoor museum area is only open seasonally. Visitors can freely explore the medieval ruins and experience the history of power struggles firsthand.

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Typical hours

The outdoor area is accessible at any time, while the museum is usually open from May to September. Exact hours should be checked on the official website before visiting.

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Photography

Photography in the outdoor ruin area is unrestricted. Inside the museum building, flash and tripod use may be restricted; follow the relevant signs.

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Time needed

Visiting the ruins and museum takes about one to two hours. For a thorough exploration including the surrounding park, allow two to three hours.

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Combine with

The castle is centrally located in Nyköping, which also has a characterful old town with Nyköpingshus and the City Museum. The nearby Lake Nyköpingsfjärden invites for walks.

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Getting there

Nyköping is about one hour from Stockholm by train. From the station, the castle is a ten-minute walk or a short bus ride.

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Insider tip

Visit the castle in the late afternoon when the light is especially good for photos and the quiet enhances the medieval atmosphere. Combine the visit with a walk along the Svartån river.

Geography

Coordinates

58.75000, 17.01000

Facts

The original fortification was built around 1187 to protect the area from pirate raids.
The Nyköping Banquet of 1317 is one of the most infamous betrayals in Swedish royal history.
King Karl IX turned the castle into a luxurious Renaissance residence during the late 16th century.
Materials from the castle ruins were reused to construct the Royal Palace in Stockholm after 1665.
The King's Tower (Kungstornet) is the most iconic surviving architectural element of the site.
The castle complex currently functions as a museum and a venue for historical reenactments.

Explore nearby

Notable places around

Nyköping<1 km · NExplore →

Danvikshagen8 km · SExplore →

Buskhyttan10 km · SWExplore →

SSAB Oxelösund10 km · SEExplore →

Koppartorp13 km · SWExplore →

Nynäs Manor24 km · NEExplore →

Kolmården Wildlife Park33 km · WExplore →

Trosa35 km · NEExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

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Overnight stops

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Only stops with (optional): 💧 Water ♻️ Disposal 🔌 Power 🚻 Toilets 🚿 Shower

Sights in the town Nyköping Castle (10)

Kulturhuset Slottsvakten 🏛 museum

Cultural centre in Nyköping hosting exhibitions and events.

Nyköpingshus🏰 castle

Medieval castle in Nyköping, Sweden, site of historical events.

Borggården

Archaeological site in Nyköping, remains of the former castle courtyard.

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City Hall of Nyköping

Town hall of Nyköping, seat of the city administration.

Alla Helgona kyrka

Church building in Nyköping Municipality, Sweden.

Sankt Nicolai

Church building in Nyköping Municipality, Sweden.

Västra klockstapeln

Building in Nyköping, Sweden, serving as a bell tower.

Culturum Konsertsal Bibliotek

Theatre, concert hall and library in Nyköping.

Sörmlands museum🏛 museum

Sörmland's county museum, preserving and exhibiting the region's cultural history.

Nyköpings Teater

Theatre in Nyköping, Sweden, with regular performances.

Sights nearby

Frequently asked questions

What happened at the Nyköping Banquet?

In 1317, King Birger invited his brothers Erik and Valdemar to a banquet, only to imprison them and let them starve in the dungeon.

Can you visit the castle today?

Yes, the Sörmland Museum uses parts of the castle for exhibitions on regional history.

Is the castle interesting for children?

Yes, especially the old dungeons and exciting knight stories fascinate young visitors.

When is the castle open?

The outdoor grounds are always accessible, while the museum inside is usually open from 10:00 AM to 5:00 PM.

Is there an entrance fee?

Entrance to the museum inside the castle is often free for all visitors.

Nyköping Castle: where is it located?

Nyköping Castle is located in Sweden.

Nyköping Castle: what is there to see?

Highlights include Kulturhuset Slottsvakten, Nyköpingshus, Borggården.

Nyköping Castle: when is the best time to visit?

The most pleasant time to visit is Jun, Aug.

Nyköping Castle: why is it worth visiting?

Nyköping Castle, historically known as Nyköpingshus, is a significant medieval fortress with roots extending back to the late 12th century.

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Nyköping Castle

Best time to visit & climate